# CVE-2026-112716: Microsoft Word heap-based buffer overflow

Source: https://junglewise.ai/threats/cve-2026-112716-heap-based-buffer-overflow-in-microsoft-office-word-allows-an  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-11-10. Updated: 2026-11-10  
License: CC BY 4.0 with a link back

CVE-2026-112716 · Severity: high · CVSS 8.8 · Published 2026-11-10

Microsoft Word, a widely-used document editing application, contains a heap-based buffer overflow vulnerability that could allow an attacker to execute arbitrary code on a user's computer when they open a specially-crafted Word document. This could lead to complete compromise of the affected system, including data theft, malware installation, or lateral movement to corporate networks.

Technologies: [Microsoft Word](https://junglewise.ai/threats/technologies/word). Vendors: [Microsoft](https://junglewise.ai/threats/vendors/microsoft).

## Quick answers

**Is CVE-2026-112716 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-112716 being exploited in the wild.

**How severe is CVE-2026-112716?** High severity, with a CVSS score of 8.8, published 10 November 2026.

**Which products and versions are affected?** Microsoft Word.

**Is there a fix for CVE-2026-112716?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-112716 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-112716?** Check whether you run Microsoft Word. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

A heap-based buffer overflow in Microsoft Word allows remote code execution when a malicious document is processed. The vulnerability requires user interaction (opening a document) and network access to deliver the exploit payload. Successful exploitation grants the attacker the same privileges as the user running Word.

## Affected products

- Microsoft Word

## Timeline

- 2026-11-10: disclosed

## References

- [https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-112716](https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-112716)

## Related threats

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- [Microsoft Word heap-based buffer overflow](https://junglewise.ai/threats/cve-2026-112724-heap-based-buffer-overflow-in-microsoft-office-word-allows-an)
- [Microsoft Word heap-based buffer overflow](https://junglewise.ai/threats/cve-2026-111306-heap-based-buffer-overflow-in-microsoft-office-word-allows-an)
- [Microsoft Office Word heap-based buffer overflow](https://junglewise.ai/threats/cve-2026-110056-heap-based-buffer-overflow-in-microsoft-office-word-allows-an)
- [Microsoft Word heap-based buffer overflow](https://junglewise.ai/threats/cve-2026-110049-heap-based-buffer-overflow-in-microsoft-office-word-allows-an)